Dye or stain.



LOHIS N.- S, 'OF NEW YORK, 1\T.- Y. I

DYE 0R STAIN.

ests.

No Drawing.

Specification of Letters Patent.

To all whom, it may concern.

-Be itknowh that 1, Louis N. SAHM, a citizen, of the UnitedStates, and a resident of the/borough of Manhattan,-dit-y, cou ty, and State of New York, have invented. a certain new and useful Dye or Stain, of" which the following is a full, clear, and exact description.

My new material is especially intended for coloring carpets, rugs and similar texk tile fabrics. ltmayahowever, be beneficially usedfor coloring leather, Wood, paper and A similar absorbent material. I

' T compound my material as follows: An alcoholic solution is made of any suitable basic coloring material, (those preferred are specified :belowz), ith" tannic acid, shellac, and a suflicient amount of acetic acid. I prefer to make the solution as follows: Dissolve the shellac and color in one half the amount-of alcohol; then dissolve the tannic acidand the acetic acid in the re-" maining half-of the alcohol; then mix the two together and the product will be ready for use. stained be fine in texture, as for example, portieres, curtains and the like, I prefer to strain the product before use. This is not essential, however, and for all ordinary uses, no advantage results from straining.

The material may be applied to the article with a brush, oras a spray, or by dipping, as preferred, and upon evaporatiomof the alcohol and acetic acid, a so-called lake pigment is formed and embedded in the fabric. I

The alcohol and the acetic acid in my compound serve as the solvent materials, the shellac aids in binding the lake pigment to the fiber, and the tannic acid combined with the color makes the lake pigment and also serves to make the colorfaster to light. The material is waterproof and cannot be washed away exceptby the use of strong soaps or The ingredients which I prefer are as fol lows Alcohols: Vlfood alcohol or 95 per cent. grain spirit, ordenatured alcohol.

If the material to be dyed'or' I Tannic acid: The ordinary commercial article, or tannin bearing substances may be suitably treated to extract the tannin therefrom. The strength of the extract however should be equal to that of ordinary good grade tannin of commerce.

Shellaci The ordinary shellac. of commerce, but other soluble resinous substances v Patented Feb. 6,1912. Application filed November 4, 1911. SerialNo. 658,522. I

may be substituted therefor, such as pine rosin, sandarach or niastic.

Acetic acid: An ordinary good grade commercial article.

Coloring matters: Those product s known commercially as brilliant green, malachite green, auramin, phosphin, rhodamin, meth: yleneblue .(zinc free), Victoria blue, Bismarck brown, chrysoidin, methyl violet, or

the base color of any of the above productsrendered soluble with acid. Other basic colors than those above specified as the preferred ones may be-employed.

A formula which I have found'useful, although the proportions'are not at all arbitrary, and may be varied to' suit special needs or uses, as those familiar with this general art will readily understand, is as follows Alcohol, 94L parts, tannic acid, 2 parts, shellac, 2 parts, basic color or a-mixture of basic colors, 1 part, acetic acid, 1 part.

The dyeing or'staining of the article to be treated is an extremely simple matter, since it is all done at one operation and no subsequent treatment is necessary; when the article is thoroughly dry, the process is finished; and, as stated above, the material may be applied by a brush, or by spraying, or by dipping, or in any other preferred manner.

I claim':

A dyeing or stainin compoundcomprising alcohol, acetic aci tannin, shellac and Louis N. SAHM.

Witnesses:

1 WM. J. Rosana-son,

EDWIN F. VALENTINE. 

